Explain the construction and working of a typical optical fibre.
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Optical fiber refers to the technology associated with data transmission using light pulses travelling along with a long fiber, usually made of plastic or glass. Transmission using fiber optic communication is preferred to use metal wires as signals are able to travel with less losses. Optical fibers are also unaffected by electromagnetic interference. The fiber optic cable uses the application of Total Internal Reflection of light.
The fibers are designed such that they facilitate the propagation of light along the optical fiber depending on the requirement of power and distance of transmission. A single mode fiber is used for long distance transmission while a multimode fiber is used for shorter distances. The outer cladding of optical fibers need better protection than metal wires.
How Does The Optical Fiber Work?
The optical fiber works on the principle of total internal reflection. Light rays can be used to transmit huge amount of data but there is a problem here… light rays travel in straight lines. So unless we have a straight long wire without any bends at all, harnessing this advantage will be very tedious. Instead, the optical cables are designed such that they bend all the light rays inwards (using TIR). Light rays travel continuously bouncing off the optical fiber walls and transmitting end to end data. Although light signals do degrade over progressing distances, depending on purity of material used, the loss is much less compared to using metal cables.
I hope it helps you.
The fibers are designed such that they facilitate the propagation of light along the optical fiber depending on the requirement of power and distance of transmission. A single mode fiber is used for long distance transmission while a multimode fiber is used for shorter distances. The outer cladding of optical fibers need better protection than metal wires.
How Does The Optical Fiber Work?
The optical fiber works on the principle of total internal reflection. Light rays can be used to transmit huge amount of data but there is a problem here… light rays travel in straight lines. So unless we have a straight long wire without any bends at all, harnessing this advantage will be very tedious. Instead, the optical cables are designed such that they bend all the light rays inwards (using TIR). Light rays travel continuously bouncing off the optical fiber walls and transmitting end to end data. Although light signals do degrade over progressing distances, depending on purity of material used, the loss is much less compared to using metal cables.
I hope it helps you.
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Construction of optical fiber:-
An optical fiber is typical made from silicon dioxide(SiO 2 ) but some little amount of other materials such as fluorozirconate, fluoroaluminate, and chalcogenide glasses as well as crystalline materials like sapphire.
Working:-
When ever a light ray enters through the optical fiber, it the angle made by the ray with the fiber axis is inside the acceptance cone, then total internal reflections with the walls of the core part of fiber transmitted the information to the other end.
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